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Question

An object moves at a constant speed along a circular path in a horizontal XY plane. With the center at the origin. When the object is at x=2m, its velocity is (4m/s)^j. What is the object's acceleration when it is y=2m:

A
(8m/s2)^j
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B
(8m/s2)^i
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C
(4m/s2)^j
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D
(4m/s2)^i
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